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Antistatic ionic compound, oligomer thereof, copolymer thereof, and pressure-sensitive adhesive composition

Inactive Publication Date: 2011-01-27
DAXON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]One objective of the present invention is to provide an ionic compound which may function as an antistatic agent and a pressure-sensitive adhesive composition containing such ionic compound as an antistatic component. Such ionic compound is compatible with the pressure-sensitive adhesive component, resulting in the pressure-sensitive adhesive composition having excellent adhesion reliability due to its excellent antistatic properties without deteriorating adhesion performance.

Problems solved by technology

It may result in pollution to optical members due to dust attachment or result in electrostatic breakage to peripheral circuit members, which, in turn, results in abnormal display due to liquid crystal orientation disorder.
When the pressure-sensitive adhesive is added with metal powder or carbon powder, its optical properties will be influenced due to poor transparency.
However, it should pay attention to the compatibility of the antistatic agent with the polymer in the polymeric composition; otherwise inappropriate antistatic performance will occur or the final products or articles may have significantly improper physical properties or appearance.

Method used

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  • Antistatic ionic compound, oligomer thereof, copolymer thereof, and pressure-sensitive adhesive composition
  • Antistatic ionic compound, oligomer thereof, copolymer thereof, and pressure-sensitive adhesive composition
  • Antistatic ionic compound, oligomer thereof, copolymer thereof, and pressure-sensitive adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

synthesis example 1

Synthesis of the Ionic Compound (a)

[0041]45 parts by weight of 2-(acryloyloxy)ethyl trimethyl ammonium chloride aqueous solution in a concentration of 80% by weight was loaded in a stirring tank and was diluted with 45 parts by weight of pure water, followed by adding 10 parts by weight of acetone and 0.01 parts by weight of p-hydroxyl anisole. The temperature was controlled at from 4 to 8° C. 60 parts by weight of lithium bis(trifluoromethane-sulfonyl)imide dissolved in 60 parts by weight of pure water was dropped slowly into the stirring tank, and acetone was added in the same time for keeping the solution clear. Thereafter, the stirring was continued for about 3 hours. The acetone was evacuated by rotary concentration at room temperature. Then, extraction was performed twice by adding ethyl acetate and the organic phase was collected. The organic phase was added with a little amount of acetone and dewatered by anhydrous magnesium sulfate. After the magnesium sulfate was filtered ...

synthesis example 2

Synthesis of the Ionic Compound (b)

A magnetic Stirrer, 100 Parts by Weight of Ionic Compound (a),

[0042]400 parts by weight of ethyl acetate as a solvent, and 2 parts by weight of 2,2′-azobisisobutyronitrile as a polymerization initiator were loaded in a two-necked flask equipped with a nitrogen inlet and a condenser. Nitrogen was introduced into the flask for 30 minutes under mild stirring and the flask was heated to reach a temperature of 70° C. to carry out the polymerization for about 6 hours and then cooled down to room temperature, obtaining a light yellow transparent liquid as a solution of the ionic compound (b) with a solid content of 20%. The ionic compound (b) is an oligomer of the ionic compound (a) and has a glass transition point at 33° C. as determined by a differential scanning calorimeter.

synthesis example 3

Synthesis of the Ionic Compound (c)

A Magnetic stirrer, 50 Parts by Weight of Ionic Compound (a),

[0043]50 parts by weight of butyl acrylate, 400 parts by weight of ethyl methyl ketone as a solvent, and 2 parts by weight of 2,2′-azobisisobutyronitrile as a polymerization initiator were loaded in a two-necked flask equipped with a nitrogen inlet and a condenser. Nitrogen was introduced into the flask for 30 minutes under mild stirring and the flask was heated to reach a temperature of 80° C. to carry out the polymerization for about 6 hours and then cooled down to room temperature, obtaining a solution of the ionic compound (c) with a solid content of 20%. The ionic compound (c) is a copolymer of the ionic compound (a) and butyl acrylate.

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Abstract

A pressure-sensitive composition contains an ionic compound, or an oligomer or co-polymer of the ionic compound which is composed of a ((meth) acryloyloxy) alkyl ammonium cation and (CF3SO2)2N− anion, or a combination thereof, to obtain a pressure-sensitive adhesive sheet having excellent antistatic properties without adhesion deterioration.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an antistatic pressure-sensitive adhesive composition, and particularly to an antistatic component and an acrylic pressure-sensitive adhesive composition containing the antistatic component, which has both excellent adhesion and antistatic properties.[0003]2. Description of the Prior Art[0004]Pressure-sensitive adhesives (PSAs) are adhesives that can bind two types of materials together upon the application of a contact pressure. They are widely and conveniently used and have been utilized in display devices to serve as, for example, adhesive layers for polarizing sheets in liquid crystal displays.[0005]Conventional pressure-sensitive adhesives are composed of organic polymeric materials and typically have highly electric insulation properties, such that statistic charges tend to occur upon rubbing or peeling. Accordingly, when a releasing film for protecting a pressure-sensitive adhesiv...

Claims

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Application Information

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IPC IPC(8): C08L39/00C07C69/533C08F26/02C08L35/02
CPCC07C219/08C08G18/289C08F120/34C08F2220/1825C08L33/02C08L33/08C08L33/14C09J133/02C09J133/08C09J133/14C09J2201/606C07C311/02C08G18/0814C08G18/0804C08G18/6254C08L2666/04C08F220/06C08F2220/281C08F220/1804C09J2301/302C08F220/281
Inventor CHIANG, HOU-JEN
Owner DAXON TECH INC
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